International Numbers can be added or updated in UCPath by UC Berkeley Transactors or employee:
UC Berkeley Transactor - Submit a Personal Data Template and add a request in the comments section to add/update the international phone number
Employee - Navigation: Employee Actions > Personal Information > Personal Information > Phone Numbers > Change Phone Numbers > Add Phone > Phone Type; select: Mobile-Personal, Mobile-Wor, or Work-Other Location > Enter International Phone Number and click Save